Determine number of permutations(arrangements) of ...

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  1. hulya verheijden
    hulya verheijden
    Permutations:n thing taken r at a time, i.e P(n,r) =n!/(n-r)!
    17 things taken 5 at a time
    P(17,5) = 17!/ (17-5)! = 17*16*15*14*13*12!/12! = 742560
    10 things taken 5 at a time
    similarly P(10,5) = 10!/(10-5)! = 10*9*8*7*6*5!/5! =10*9*8*7*6 =2721600

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